Hello, Scotty, I have your videos very useful so thank you very much!
I bought this Audi with a check engine light on because when I ran the codes and found the it had a random misfire and cyl2 misfire detected. I looked up what it could be and everything I read pointed to spark plugs an coil packs. So after purchasing the car and having changed the oil, oil filter, fuel filter, and air filter I also replaced the spark plugs and coil packs (I did not check for gap on the new spark plugs didnt think it was important) , and when I was driving it the other day the Check engine light came on again, and now it was random misfire and cyl 4 misfire. I dont know what it could be after having put in new plugs and coil packs. Please help